10 citations · 17 across the 13 of their papers we have counts for
14 papers
Oracle high-dimensional -estimation using smooth reparameterization for sparsity
Yoichi Nishiyama
This paper establishes a unified non-linear regularization framework for high-dimensional -estimation, encompassing both linear models and Cox's proportional hazards models. Rat…
From -domination maximal inequalities to infinite-dimensional martingales, towards high-dimensional statistics
Yoichi Nishiyama
A novel approach is proposed to establish a sharp upper bound on the expected supremum of a separable martingale random field, serving as an alternative to classical universal chai…
On rank statistics of PageRank and MarkovRank
Yoichi Nishiyama
The well-known statistic PageRank was created in 1998 by co-founders of Google, Sergey Brin and Larry Page, to optimize the ranking of websites for their search engine outcomes. It…
Change point detection based on method of moment estimators
Ilia Negri, Yoichi Nishiyama
A change point detection procedure using the method of moment estimators is proposed. The test statistics is based on a suitable -process. The asymptotic behavior of this proces…
From a stochastic maximal inequality to infinite-dimensional martingales
Yoichi Nishiyama
As an alternative to the well-known methods of "chaining" and "bracketing" that have been developed in the study of random fields, a new method, which is based on a stochastic maxi…
Weak convergences of marked empirical processes in a Hilbert space and their applications
Koji Tsukuda, Yoichi Nishiyama
In this paper, weak convergences of marked empirical processes in and their applications to statistical goodness-of-fit tests are provided, where $L^2(\mathbb{R…